New Super Luigi U: Soda Jungle-7 -- Wiggler Floodlands

This is a vertical level with rising purple water. There are giant Wigglers here you can bounce off of to reach higher platforms. You'll need to bounce off a Wiggler for the first Star Coin. Climb higher and you'll see a Red Coin Ring. A bit higher and you'll see the second Star Coin out of reach. There's a Koopa nearby, so quickly throw its shell to get it. At the top is a yellow pipe to the second part of the level. Here you can get an Acorn. Bounce off of a Wiggler or fly and boost to get the third Star Coin. Keep climbing, as the water will rise in this level, as well. At the top, bounce off of a Wiggler to reach the yellow pipe to the flagpole.